Improvement in stave-machines



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'Pd wie@ MMM, /567 [22 1re nlm'- uitrit tetra atmt @fitta FRANCIS C.'CLARK, CF BENTCNS PORT'ICWA, ASSIGNCR TO HIMSELF ANI) JOHN E.REININGHAUSCF THE SAME PLACE.

Letters Patent No. 71,2717, dateclNovember 26, 1867.

IMPROVEMENT IN STAVE-MAGHINES.

TQ ALL WHOM IT MAYCONCERN:

Be it known that I, FRANCIS O. CLARK, of Bentons Port, in the county ofVan Buren, and State of Iowa, have invented a new and imprqved Machinefor Dressing Barrel-Staves; and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawings, making 'part of this speci'dcation, in whichFigure 1 is a plan view of the improved machine. j

Figure is a longitudinal section taken in the vertical plane indicatedby red line x x in g. 1.

Figure 3 is a transverse section taken in the vertical plane indicatedby red linehg/ y in iig. 1.

Figure 4 is a transverse section taken in the vertical plane indicatedby red line z z in gs. 1 and 2.

Figure 5 is a detail ofthe saw-frames.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to certain novel improvements on machinery whichis designed for dressing staves on their outside surfaces, so as toprepare the staves to be tted together and hooped in the form ofbarrels.

To enable others skilled in the art to understand my invention, I willdescribe its construction and operation.

In the accompanying drawings, A represents a table, which is adapted forsustaining the devices for jointng and dressing staves. Upon the top Bof this table is a sliding carriage, C, which is fitted to move in agroove extending transversely across the tabletop;.and throughlongitudinal slots, which are made through this carriage, two inclinedcircular saws project, for bevelling or jointing'thc staves which areconfined upon said carriage. Near one end of the carriage C is astandard, a, to which is pivoted a right-angular lever, b, the object ofwhich is to bend and lconfine one end of a stave upon the carriage. Theopposite end of the stave is confined beneath a clamp, c, on the endoi'ya set-screw, which is tapped through a bracket upon the carriage.Between the two clamps is a block, cl, which is attached to the carriageby means of short studs, and which is movable. This block forms anelevated support for the middle of a. stave lwhen bent and held down, asshown in fig. 3, and by adjusting it in a direction with thelengthofvits carriage, and bending the staves over it, more or less, thestaves can be brought to the exa-ct curved shape which they will takewhen hooped together in a barrel.

The edges of the staves are bevelled or jointed by means of two inclinedcircular saws e e, which are keyed on the ends o f arbors ff, and drivenby means of belts leading from the main shaft D. The saw-shafts ff havetheir bearings upon frames g g, which are inclined in oppositedirections, and which are allowed to have an endwise adjustment, Vsothat the two saws can be moved nearer together or further apart,according to the width of the staves to be jointed. The saw'frames g gare supported in guide-frames 7th, which are pivoted by the trunnions z'to the table-frame, thus allowing the saw-frames to be vibrated, and thesaws adjusted and set at any desiredinclin ation, according to thediameter ofthe barrels for which the staves to be jointed are designediThe two levers jj are intended for adjusting thesawsvund holding them atany desired angleawith respect to the table A; and the lever 7c, withits toggle-joints Z l, is designed for adjusting the saar-frames andsetting the saws at the required distance apart. The three leversjj and7c extend to the front part of the table, and pass through hangers m, towhich the levers are attached by means of pins passed through saidhangers.

Alongside of the sliding carriage C are the devices for dressing theexternal surfaces of the staves after they have been jointed. Forithispurpose I employ feed-rollers 1t at', one of which is concave and theother correspondingly convex, a supporting-roller, o, and twoguide-rollers pp. Between the two rollers 1t andp are the cutters, whichare secured to a cutter-head, r, upon a shaft which receives its motionfrom the main driving-shaft E through the medium of a belt. y, j

The staves are Guided up to the work uponvthe curved bed s made in thetable-top B, and allowed to pass ofi' after they are dressed over thecurved bed s. This bed s e andthe lower set of rollers 'n' op arearranged in a curved line, corresponding to the curved shape ofthe sawedstaves, consequently the latter will not be bent or strained while theyare being dressed.

In order tovadapt this part of the machine for dressing st'aves ofdiiierent thicknesses, I shall employ vertically' adjustable bearings orjournal-boxes for the ends of the feed-roller and cutter-head shafts, orsimply for the feed and supporting-roller shafts, which bearings will beadjusted by'means of the setscrews t t, shown in fig. 4.

By my arrangement of jointing and dressing contrvances alongside oneanother, as shown, the attendants at one end of the machine canconveniently pass the staves to and from the jointingdnachine and to thedressingmachine, and thus the operation of jointing and dressing curvedstares-can be carried on uninterruptedly after the machine is started.

My combined machine prepares curved staves ready for being set up into abarrel, and to be crozed, after they have been bent or are sawed from ab olt, and the staves which are thus produced are more perfect and costless, for the reason that I employ new and'improved machinery in theirproduction, such machinery being much simpler in construction andarrangement than any with which I am familiar for doing like and thesame'amont of work in a given time. I

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

The curved beds s s', formed `in the table-top B, in combination withfeed-rollers n np p', supportingroller o, and cutter-head r, arranged asdescribed, for the purpose of dressing eurvedlstaves.

FRANCIS O. CLARK.

Witnesses:

EDW. SCHAFER, EDM. F. BROWN.

